.main{
    padding:5%;
}
.main  li{
    width: 100%;
    height: 50px;
    margin-top: 20px;
}
.main li input{
    width: calc(100% - 20px);
    height: 100%;
    padding-left: 20px;
}
.main .number3 input{
    width: 49%;
}
.main .number3 button{
    width: calc(47% - 20px);
    margin-left: 2%;
    height: calc(100% + 4px);
    padding-left: 0px;
}
.main li button{
    width: 100%;
    height: 100%;
    outline: none;
    border: none;
    background: royalblue;
    color: #fff;
}

